From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/g++.dg/cpp0x/sfinae2.C | 39 ++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 gcc/testsuite/g++.dg/cpp0x/sfinae2.C (limited to 'gcc/testsuite/g++.dg/cpp0x/sfinae2.C') diff --git a/gcc/testsuite/g++.dg/cpp0x/sfinae2.C b/gcc/testsuite/g++.dg/cpp0x/sfinae2.C new file mode 100644 index 000000000..b9ef70d99 --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp0x/sfinae2.C @@ -0,0 +1,39 @@ +// PR c++/44967 +// { dg-options -std=c++0x } + +template T&& declval(); + +template +struct has_construct +{ + typedef char one; + typedef struct {char _m[2]; } two; + + template + static decltype(declval().construct(declval(), declval()...), one()) test(int); + template + static two test(...); + + static const bool value = sizeof(test(0)) == 1; +}; + + +struct A0 +{}; + +struct A1 +{ + void construct(int*, int); +}; + +template +struct A2 +{ + template + void construct(_Tp1*, _Args&&...) {} +}; + +#define SA(X) static_assert(X,#X) +SA((!has_construct::value)); // ok +SA((has_construct::value)); // bang +SA((has_construct, int>::value)); // bang -- cgit v1.2.3